Smart lock systems and methods

1. A door lock system coupled to a building, the door lock system comprising a door lock and one or more computing devices comprising processing circuitry configured to:

receive, from a visitor, an access request;

capture an identity trait of the visitor;

detect a signal indicative of a presence of a mobile computing device of the visitor;

determine that the identity trait and the signal are associated with a known identity of the visitor; and

move the door lock from a locked state to an unlocked state.

2. The door lock system of claim 1 , wherein the access request comprises an indication of a push, by the visitor, of a doorbell coupled to the door lock.

3. The door lock system of claim 1 , wherein the access request comprises an indication of a user selection on a mobile application of the mobile computing device of the visitor.

4. The door lock system of claim 1 , wherein the access request comprises an approach of the visitor to the door lock, and wherein receiving the access request comprises receiving, from a motion sensor communicatively coupled to the processing circuitry, an indication of the approach of the visitor.

5. The door lock system of claim 1 , wherein the signal indicative of the presence of the mobile computing device comprises a Bluetooth signal, a Wi-Fi signal, a radiofrequency identification (RFID) signal, a near-field communication (NFC) signal, or a geolocation signal of the mobile computing device of the visitor.

6. The door lock system of claim 1 , wherein the identity trait of the visitor comprises a facial feature, a fingerprint, a retina pattern, or a voice signature of the visitor.

7. The door lock system of claim 1 , wherein the processing circuitry is further configured to determine whether to grant access to the visitor in response to determining that the identity trait and the signal are associated with the known identity of the visitor.

8. The door lock system of claim 7 , wherein determining whether to grant access to the visitor comprises determining that the known identity has been granted unlimited access or determining that the known identity has been granted partial access during a predetermined timeframe that includes the present time.

9. The door lock system of claim 7 , wherein the mobile computing device of the visitor comprises a first mobile computing device, and wherein determining whether to grant access to the visitor comprises:

forwarding the known identity of the visitor to a second mobile computing device of an owner of the door lock system; and

receiving an unlock command from the second mobile computing device of the owner.

10. The door lock system of claim 7 , wherein determining whether to grant access to the visitor comprises receiving an unlock command from the mobile computing device of the visitor.

11. The door lock system of claim 10 , wherein the unlock command comprises an access code for the door lock.

12. A method of operating a door lock system comprising a door lock coupled to a building, the method comprising:

receiving, by the door lock system, an access request from a visitor;

capturing, by the door lock system, an identity trait of the visitor;

detecting, by the door lock system, a signal indicative of a presence of a mobile computing device of the visitor;

determining, by the door lock system, that the identity trait and the signal are associated with a known identity of the visitor; and

moving, by the door lock system, the door lock from a locked state to an unlocked state.

13. The method of claim 12 , wherein the access request comprises an indication of a push, by the visitor, of a doorbell coupled to the door lock.

14. The method of claim 12 , wherein the access request comprises an indication of a user selection on a mobile application of the mobile computing device of the visitor.

15. The method of claim 12 , wherein the signal indicative of the presence of the mobile computing device comprises a Bluetooth signal, a Wi-Fi signal, a radiofrequency identification (RFID) signal, a near-field communication (NFC) signal, or a geolocation signal of the mobile computing device of the visitor.

16. The method of claim 12 , wherein the identity trait of the visitor comprises a facial feature, a fingerprint, a retina pattern, or a voice signature of the visitor.

17. The method of claim 12 , further comprising determining, by the door lock system, whether to grant access to the visitor in response to determining that the identity trait and the signal are associated with the known identity of the visitor.

18. The method of claim 17 , wherein determining whether to grant access to the visitor comprises determining that the known identity has been granted unlimited access or determining that the known identity has been granted partial access during a predetermined timeframe that includes the present time.

19. The method of claim 17 , wherein the mobile computing device of the visitor comprises a first mobile computing device, and wherein determining whether to grant access to the visitor comprises:

forwarding, by the door lock system, the known identity of the visitor to a second mobile computing device of an owner of the door lock system; and

receiving, by the door lock system, an unlock command from the second mobile computing device of the owner.

20. A non-transitory, computer-readable medium comprising instructions that, when executed by processing circuitry of a door lock system coupled to a building, cause the processing circuitry to:

receive an access request from a visitor;

capture an identity trait of the visitor;

detect a signal indicative of a presence of a mobile computing device of the visitor;

determine that the identity trait and the signal are associated with a known identity of the visitor; and

move the door lock from a locked state to an unlocked state.